Note 5 - Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortized cost	$ 304,539	$ 313,907
Gross unrealized gains	1,903	708
Gross unrealized losses	2,320	5,099
Fair value	304,122	309,516
US Government Agencies Debt Securities [Member]
Amortized cost	19,352	17,529
Gross unrealized gains	200	54
Gross unrealized losses	37	144
Fair value	19,515	17,439
Corporate Debt Securities [Member]
Amortized cost	13,046	13,052
Gross unrealized gains	98	76
Gross unrealized losses	232	436
Fair value	12,912	12,692
Collateralized Mortgage Backed Securities [Member]
Amortized cost	167,705	168,854
Gross unrealized gains	975	328
Gross unrealized losses	1,816	3,564
Fair value	166,864	165,618
US States and Political Subdivisions Debt Securities [Member]
Amortized cost	104,436	114,472
Gross unrealized gains	630	250
Gross unrealized losses	235	955
Fair value	$ 104,831	$ 113,767

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

No definition available.

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

+ Details

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

+ Details

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

+ Details

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- Details

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